论文标题
气体磁盘不稳定的帕克吉恩动态，包括宇宙射线的效果
Dynamics of the Parker-Jeans instability of gaseous disks including the effect of cosmic rays
论文作者
论文摘要
通过三维磁磁水动力学（MHD）模拟，研究了宇宙射线对Parker-jeans不稳定性在磁化自我散热气体磁盘中的影响，并以宇宙射线为无质量的液体，具有明显的压力。在模拟中考虑了沿磁场的宇宙射线扩散。磁盘的初始配置是夹杂在热力电晕（顶部和底部）之间的磁性冷气板。我们表明，宇宙射线在某些参数制度中的细丝或团块的形成中起着重要作用。在气体板厚度的一定范围内，宇宙射线扩散系数在确定细丝是否沿磁场沿或垂直于磁场的丝中起决定性作用。我们还考虑旋转对系统的影响。
The effect of cosmic rays on the Parker-Jeans instability in magnetized self-gravitating gaseous disks is studied by three-dimensional magnetohydrodynamic (MHD) simulations with cosmic rays taken as a massless fluid with notable pressure. Cosmic ray diffusion along the magnetic field is taken into account in the simulation. The initial configuration of the disk is a magnetized cold gas slab sandwiched between hot corona (on top and bottom). We show that cosmic rays play an important role in the formation of filaments or clumps in some parameter regimes. In a certain range of the thickness of the gas slab, the cosmic ray diffusion coefficient plays a decisive role in determining whether the filaments lie along or perpendicular to the magnetic field. We also consider the effect of rotation on the system.
